This gearbox is designed for use with a variety of compatible equipment, including finishing mowers and brushhogs. It has a  40 horsepower 540  gearbox, making it a powerful addition to your mower  attachment. Whether you're in the agriculture or industrial sector, this gearbox is a reliable choice for maintaining your mowing equipment. Mounting holes measure 4-3/4 on center adjacent hole to adjacent hole and 6-1/4 center to center  on diagonal holes. It has a 6 spline input shaft and a  1/4 '' keyed out put shaft that measures 1-1/4''. Measurements included in pictures please compare to your part before ordering. 1:1.47 ratio . ***PLEASE NOTE THESE GEAR BOXES ARE SHIPPED  DRY WITHOUT GEAR LUBE. PLEASE FILL WITH 80W90W GEAR LUBE BEFORE USING! ***  Suitable for some Woods, King kutter,  Bushhog,  Farmline, Coni ,and others